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Tapflo® Metal Series Diaphragm Pumps
Pneumatically Powered Diaphragm Pumps For Liquids
DESCRIPTION
The Metal series consists of 5 sizes, covering the capacity range 0-420 liters per minute.
Since 1970 these pumps have satisfied the concept of reliability with minimum components enabling easy maintenance. A wide range of construction materials handles a range of pH-neutral fluid media.
Every Tapflo pump goes through an accurate quality check and test run before shipment. All pumps are CE-marked and meet the European Community Machinery Directives. The pumps are shipped with a detailed manual that provides installation, service and parts information.
FEATURES
RUN DRY WITHOUT DAMAGE
INFINITELY VARIABLE FLOW
CONTROL
SELF PRIMING TO 8 METERS W.C.
GOOD FOR SENSITIVE LIQUIDS
THANKS TO SMOOTH NON-
ROTATING OPERATION
HANDLES LOW VISCOSITY,
ABRASIVE, SOLID LADEN &
VISCOUS FLUIDS
NON-POLLUTING AIR
DISTRIBUTION SYSTEM
EXPLOSION PROOF DESIGN
AVAILABLE
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HOW IT WORKS
The two diaphragms, connected by a
diaphragm shaft, are pushed back
and forth by alternately pressurizing
the air chambers behind the
diaphragms using an automatically
cycling air valve system.
One diaphragm creates a suction
action(1) when being pulled back
from the housing. The other
diahragm simultaneously transmits the air pressure to the liquid in the housing, pushing it towards the discharge port(2).
During each cycle the air pressure on the back of the discharging diaphragm is equal to the head pressure on the liquid side. Tapflo diaphragm pumps can therefore be operated against a closed discharge valve with no adverse affect to the life of the diaphragms.
A-Flexible Installations- The connections may be rotated up to 180° to simplify integration into machines and piping systems.
B-Completely tight pump housing seals both toward the diaphragm and connections.
C-Maintenance free air valve of brass operates without lube air. It does not pollute and operation has no deadlock.
D- Long life diaphragms have sandwich compound construction with superior strength & chemical resistance(PTFE, EPDM or NBR).
A threaded metal core makes for easy diaphragm replacement. |
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| Tapflo diaphragm pumps have very few parts and are easy and quick to maintain. |
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| Specifications |
T25 |
T70 |
T120 |
T220 |
T420 |
| General |
| *Max capacity (l/min)/(US gpm) |
25 / 6.6 |
70 / 18.5 |
120 / 31.7 |
220 /58.1 |
420 /111 |
| **Volume per stroke (ml)/(cu in) |
70 / 4.27 |
130 / 7.93 |
420 / 25.6 |
910 /55.5 |
2200/134.2 |
| Max discharge pressure (bar)/(psi) |
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8 /116 |
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| Max air pressure (bar)/(psi) |
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8 /116 |
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| Max suction lift dry (m)/(Ft) |
1.5 / 4.9 |
3 / 9.8 |
4 /13 |
5/16 |
5 /16 |
| Max suction lift wet (m)/(Ft) |
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8 /26 |
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| Max size of solids (ø in mm)/(in) |
3 / 0.12 |
4/0.16 |
6 /0.23 |
10/ 0.40 |
15 / 0.59 |
| Max temp with EPDM/NBR (°C)/(°F) |
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80/176 |
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| Max temp with PTFE (°C)/(°F) |
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110/230 |
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| Min temperature (°C)/(°F) |
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-20/-4 |
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| Weight |
| Standard pump in alu (kg)/(Ib) |
2 / 4.4 |
5 /11 |
8 /18 |
19/42 |
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| Standard pump cast iron (kg)/(Ib) |
7/ 15 |
10 /22 |
17/37 |
44/97 |
34 /75 |
| Standard pump in AISI 316 (kg)/(Ib) |
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7/15 |
16/35 |
38 / 84 |
80 /176 |
| Drum pump TD in alu (kg)/(Ib) |
3/ 6.6 |
7 /15 |
10/22 |
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68 /150 |
| Drum pump TD in AISI 316 (kg)/(Ib) |
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9/20 |
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| Pump housing and all wetted metal details |
| Center block, alu and cast iron pumps |
aluminum (standard) or cast iron |
| Center block, AISI 316 pumps |
PP (standard) or conductive PP |
| Diaphragms |
NBR, PTFE or EPDM |
| Valve balls |
NBR, PTFE, AISI 316L, EPDM, polyurethane or ceramic |
| Air valve |
Brass / NBR or optional AISI 316L / FKM |
| O-rings |
EPDM, NBR or FKM |
| Housing screws |
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| Diaphragm shaft |
AISI 304 on stainless steel pumps |
| Drum handle (TD pumps) |
Stainless steel AISI 304 |
| Stainless steel AISI 316L |
| * = Recommended flow is half of the the max flow, i.e. recommended flow for a T120 is 60 l/min (15.9 US gpm). |
| ** = The value is based on pumps with EPDM diaphragms. Pumps with PTFE diaphragms have about 15% less volume. |
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DIMENSIONS(MM)
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ORDERING INFORMATION
ABCDE (T25ANNNPT)
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| PLEASE CALL 1-800-253-2497 TO ORDER THESE ITEMS |
| A Model |
B Pump Housing Material |
C Diaphragm Material |
D Valve Ball Material |
E Connections |
| T25 |
A= Aluminum |
N= NBR (Nitrile Rubber) |
N= NBR (Nitrile Rubber) |
NPT=NPT Female Pipe Threads |
| T70 |
C= Cast Iron |
E=EPDM |
E=EPDM |
| T120 |
S= Stainless Steel |
T= PTFE |
T= PTFE |
| T220 |
X= PTFE Coated Aluminum |
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S=AISI 316 SS |
| T420 |
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P= PU (Polyurethane) K= Ceramic) |
| Bold order combinations typically ship from stock |
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| Options - Call For Details |
| Optional material for center block |
Draining system |
| Backup diaphragm system |
Optional connection type |
| Filterpress Pump |
Powder pump |
| Short diaphragm shaft |
Optional material for air valve |
| Twin pump (double inlet/outlet) |
ATEX Explosion Proof, group II, cat 2 |
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PERFORMANCE
The performance curves are based on water at 20°C.
Other circumstances might change the performance.
See below how the capacity will change at
different viscosities and suction lifts.
CAPACITY CHANGES
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THE WIDE RANGING APPLICATIONS
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The metal pump is useful to a wide range of applications in workshops, paint and coating industry and waste handling to name a few.
The pumps transfer most kinds of pH-neutral fluids, both thin, thick, solid laden or abrasive.
Oils, fats, paint, glue, solvents are typical fluid media applications for the metal series.
Tapflo metal pumps can be mounted in a variety of ways
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Tapflo T170 for transfer of waste products and oil from a separator. |
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| OTHER TAPFLO PRODUCTS |
Pumps made from conductive (carbon filled) PE or PTFE for use in explosion hazardous environments
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Twin pump piping arrangement is ideal when pumping two different liquids separated from each other, in the same pump. Used for glue and ink etc. |
A stroke counter is an easy way to pump a preset
volume of fluid. The number of strokes are preset via an
LED display and the electronic unit then controls the
pump auomatically. |
TR20, T50 and T100 are available in drum pump version. The pump has a handle in stainless steel and the pump tube can be delivered in any length up to 2 m.
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In applications with critical safety needs a diaphragm monitor can be supplied. The monitor will alarm and shut down the pump in case of a diaphragm break.
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Diaphragm acting pumps have an inherent pulsating flow output. A pulsation dampener is offered for applications where this cannot be tolerated. |
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